This idea has been merged into another idea. To comment or vote on this idea, please visit APP-I-4755 Release and Feature Management Change Log Reports.
Release History tracks changes in the object, as Feature History tracks changes in the feature itself. If year roadmaps it is quite common that a feature that is meant to be implemented in Release 1 passes to Release 2.
The idea is to see a history of the features that were/are part of a release throughout its history with the possibility of exporting it to a notebook.